Adjacent to bustling Berlin, Germany lies Teufelsberg, a now-abandoned Cold War listening station. The station sits on top of a 262-foot artificial hill called Devil’s Mountain—basically a pile of WWII rubble covering up a Nazi military college. NSA built the station on the mountain so they could eavesdrop on East Berlin; it was abandoned after the fall of the Berlin Wall in 1989. Today, it is a graffiti-covered ruin overlooking the city. Historical tours are offered almost every day, providing visitors views of both the radar domes and the city below.
